He’ll play a teacher who sees potential in Siobhan's troubled step-daughter.

The Hollywood Reporter has confirmed that Dohring will play Mr. Carpenter, a high school teacher at Juliet’s (Zoey Deutch) school, as first reported by EW.

Ringer stars Sarah Michelle Gellar as troubled twins Bridget and Siobhan, who both have a bounty on their heads. Juliet is the step-daughter of Siobhan and Andrew Martin (Ioan Gruffudd), who returns home from boarding school and winds up attending a new school where Mr. Carpenter sees potential in her.